well. first of all, i couldn't find the article on Straits Times online so i had to settle for a rather, well, nice blog that provides us with a whole gamut of articles from the Straits Times.
okay
in essence, the article first shows us a table of prices of homes in an assortment of countries, and it basically acts as a juxtaposition of the prices. and the table is here

so we see that in recent years, the average prices of top-end properties in the Republic have actually risen by 31 per cent to £1,197 (S$3,232) per sq ft. This is the sixth-biggest price jump globally, according to a survey by Knight Frank and Citi Private Bank.
now we know of the sub-prime crisis that had rocked, and is still rocking, America. the crisis had been labeled as one of the worst since the Great Depression. so one might actually assume that a crisis would undoubtedly result in a lower income right? so let's just apply some elasticity concepts here. now a recession would indubitably lead to a decreased income. and as the name suggests, "Luxury homes" are, well, a luxury good. thus the luxury homes can in fact be deemed income elastic. so wouldn't a decrease in income due to the recession lead to a greater than proportionate decrease in demand? if that was the case, prices of the homes would inevitably plummet.
however, the converse is true, and in actuality, the prices for luxury homes in Singapore have risen by an incredible 31%. and globally, the 2008 Annual Wealth Report found that the prices of luxury homes around the world increased, on average, by 11 per cent last year.
a probable explanation for such an occurrence could be aptly explained and accounted for.
The sub-prime credit crisis did indeed result in falling prices, restricted financing and declines in sale volumes. And considering the fact that the USA has established itself as a world economic giant, with a myriad of countries (including Singapore) reliant on trade with the USA, one would probably expect the crisis to hit Singapore as well, and probably lead to a sharp drop in income. However, it has been observed that the sub-prime credit crisis has led to an emergence of a new breed of super rich.
The rise in commodity price rises have brought wealth and created a significant number of additional new high net worth individuals. This had added more than 8,500 additional wealthy residents in 2007.
As such, this rising affluence has generated another market for second homes and holiday homes.
so while a recession should, by right, result in a decreased income, it has conversely led to a spike in income for a significant number of individuals. as such, this increased affluence has led to a spike in the demand for luxury homes in Singapore.
now i must seek your pardon for being incapable of drawing a graph using a computer, because i actually know next to nothing about drawing a graph using whatever software the computer may provide. so i shall attempt to explain using words. and considering the level of economic knowledge this class possesses, i'm quite certain that you would understand.
so here i go.
2 possibilities.
1) supply remains stagnant as in a short period of 1 year, we would probably not expect too sharp a rise in the supply of luxury homes.
2) supply rises. producers attracted by the soaring prices of the commodity (which in this case is the luxury home), thus increasing supply. SS shifts to right.
either way, with the increased demand for luxury homes due to increased affluence, the DD curve shifts right as well..
this would lead to a significant rise in the prices of luxury homes in Singapore, which in this case was a 31% rise.
so there we have an account of the rising prices of luxury homes.
i must say that my answer is not perfect and i know that it isn't. so comment on it and i can learn from it (:
so that's just about it.
Bryan Ong